DECnet-11M, Version 4.2 RSX-11M Network Software

DECnet-11M is a software product enabling RSX-11M systems to function as routing or non-routing (end) nodes within DECnet Phase IV networks, compatible with Phase III/IV products. It employs DIGITAL Network Architecture (DNA) protocols to provide task-to-task communications, network file operations (transfer, access, queuing), remote command terminal support, and resource sharing.

The software supports diverse communication links including synchronous and asynchronous lines, Ethernet Local Area Networks (LANs), parallel interfaces, and X.25 Packet Switched Data Networks (when integrated with RSX-11 PSI/M). It features Adaptive Routing for efficient message forwarding via the least-cost path, and Area Routing, which allows networks to be organized into up to 63 distinct areas, each accommodating up to 1023 nodes. DECnet-11M also offers capabilities for down-line system and task loading for RSX-11S nodes, upline dumping for diagnostics, and comprehensive network management through the Network Control Program (NCP) for monitoring, control, and event logging.

System configuration involves balancing cost, performance, and functionality, considering factors like CPU type, memory size, communication line characteristics, and message traffic. The document provides detailed load tables for UNIBUS and QBUS devices across various PDP-11 processor types to guide configuration. Minimum hardware and software requirements are specified, including memory, disk space, supported communication devices, and prerequisite RSX-11M operating system, alongside optional software. The document concludes with details on licensing options (single-use, revision rights), installation services, NETstart services for network startup, various levels of software product service agreements, and available professional training and consulting services.